/**
 * Created by Administrator on 2016/7/27.
 */
var ul4 = document.querySelector('.ul-4');
var ul41 = document.querySelector('.ul-41');
ul4.addEventListener('mouseover',function(){
    ul41.style.display = 'block';
});
ul4.addEventListener('mouseout',function(){
    ul41.style.display = 'none';
});
ul41.addEventListener('mouseover',function(){
    ul41.style.display = 'block';
});
ul41.addEventListener('mouseout',function(){
    ul41.style.display = 'none';
})